PHP hexdec()

The hexdec() function returns the decimal equivalent of a given hexadecimal string. It ignores any non-hexadecimal characters, computing the result as if they did not exist.

The function returns a value of type int if the converted number fits into the platform’s int type; otherwise, a float is returned.

Syntax

$decimal = hexdec(hexString);

Where hexString is the hexadecimal string that is to be converted into a decimal.

Example

This example converts the hexadecimal string "CDECADE" into its decimal equivalent.

<?php
  $decimal = hexdec("CDECADE");
  echo $decimal;
?>

Copy to clipboard
Copy to clipboard

This example results in the following output:

215927518

Copy to clipboard
Copy to clipboard

Codebyte Example

This example returns the value of both a well-formed hexadecimal string and its malformed equivalent (non-hexadecimal characters ignored):

Visit us
Visit us
Hide code
Code
Output
Hide output
Copy to your clipboard
Copy Codebyte
Run